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EP0623202A4 - Temperature controller air outlet. - Google Patents

Temperature controller air outlet.

Info

Publication number
EP0623202A4
EP0623202A4 EP94902367A EP94902367A EP0623202A4 EP 0623202 A4 EP0623202 A4 EP 0623202A4 EP 94902367 A EP94902367 A EP 94902367A EP 94902367 A EP94902367 A EP 94902367A EP 0623202 A4 EP0623202 A4 EP 0623202A4
Authority
EP
European Patent Office
Prior art keywords
air
oscillator
oscillatory
island
controlling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94902367A
Other languages
German (de)
French (fr)
Other versions
EP0623202A1 (en
EP0623202B1 (en
Inventor
Ronald D Stouffer
Ernest W Chesnutis Jr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bowles Fluidics Corp
Original Assignee
Bowles Fluidics Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bowles Fluidics Corp filed Critical Bowles Fluidics Corp
Publication of EP0623202A1 publication Critical patent/EP0623202A1/en
Publication of EP0623202A4 publication Critical patent/EP0623202A4/en
Application granted granted Critical
Publication of EP0623202B1 publication Critical patent/EP0623202B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/081—Air-flow control members, e.g. louvres, grilles, flaps or guide plates for guiding air around a curve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/34—Nozzles; Air-diffusers
    • B60H1/345—Nozzles; Air-diffusers with means for adjusting divergence, convergence or oscillation of air stream
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F13/072—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser of elongated shape, e.g. between ceiling panels

Definitions

  • the present invention is directed to an air outlet structure and system, in which air temperature is controlled by mixing or pulsating control of the air flow and also to control the fan angle and directionality of the air flow vectors.
  • Fluidic oscillators for causing a sweeping or oscillatory movement of an air jet are well known in the art as is exemplified by the following prior patents: 5,099,753, 4,709,622, 4,694,992, 4,672,886 and 3,832,939, and there are many other examples.
  • An object of the present invention is to provide a temperature controller using a fluidic element.
  • a further object of the invention is to provide a low cost temperature controller for issuing air (heated or cooled) into a living space such as a room or into the passenger compartment of a vehicle, such as a passenger car.
  • a further object of the invention is to provide a controllable fluidic element.
  • Still a further object of the invention is to provide a low cost remote control arrangement for controlling the oscillation or non-oscillation of a fluidic element.
  • an island oscillator element of the type disclosed in Stouffer patent 4,151,955 (incorporated herein by reference) is rendered non- oscillatory by translation of the island, or by shifting of a portion of the outlet structure relative to the island.
  • the oscillation or non-oscillation of an island oscillator is remotely controlled by a valve feeding pressurized air from upstream of the island to a position or point which precludes the formation of shed or Karman vortices and oscillatory action via an externally operable valve elements, respectively.
  • FIG. 1 is a schematic diagram of a preferred embodiment of the invention incorporating fluid remote control of the oscillation or non-oscillation of an island oscillator
  • FIGS. 2a and 2b diagrammatically illustrate the operation with the fluid remote control valve closed and open, respectively
  • FIG. 3 is a schematic illustration of a further embodiment of the invention incorporating fluid remote control of an island
  • FIGS. 4a and 4b illustrate a further preferred embodiment of the invention in which there is relative linear translation of the island relative to the source of heated or cooled air
  • FIGS. 5a and 5b illustrate a further embodiment wherein an island element is rotated between an oscillatory and non- oscillatory modes
  • FIGS. 6a, 6b and 6c illustrate an island oscillator which is rendered non-oscillatory and oscillatory, respectively, by the absence or presence, respectively, of outlet nibs,
  • FIGS. 7a and 7b illustrate a further embodiment of the invention wherein the pressure behind the outlet nibs are vented to render the oscillator non-oscillatable
  • FIG. 8 illustrates a modification in which the outlet nibs are adjustable for directionality control
  • FIG. 9 illustrates a modification in which oscillatory/non- oscillatory states are combined with directionality control.
  • the invention controls the temperature of the fluid efflux from heater and air-conditioning (A/C) outlets by controlling the oscillation of an oscillator, particularly, an island oscillator of the type disclosed in patent 4,151,955.
  • An island oscillator is particularly advantageous in this invention because it has been found that the outlet temperatures can easily differ as much as 20 degrees between when it is oscillating and when oscillation is negated or the device rendered non-oscillatory. This is because the oscillatory mode produces thorough mixing with the ambient whereas the non-oscillatory mode produces much less mixing with ambient air.
  • This premier or superior mixing is not limited to island oscillators; however, because of the ease of operation, simplicity of the geometry and meeting of minimum (small volumetric space) packaging requirements, the island-type oscillator is preferred.
  • a temperature controllable air outlet 10 includes a housing or duct 11 coupled to a supply of air (heated or cooled) 12. While duct 11 is preferably rectangular or square in cross-section, round, oval or other shapes can be used. Transition sections from round to rectangular, etc. can be provided in the duct work DW .
  • outlet nibs 14L and 14R are shown in Figs. 6(a), Fig. 6(b) and Fig. 6(c).
  • the small nibs 14L and 14R provide the necessary throat geometry to provide the proper confinement to the downstream section of the island to support oscillation. This is true when the island 16 is positioned close to the outlet. (See patent 4,155,955 for a fuller explanation.)
  • nib 14R With only one nib, such as nib 14R, as shown in Fig. 6(c), the jet is turned to the left. In addition, the jet appears to be mixing better on the nib affected side.
  • an island member 16 has a base 17, parallel side wall surfaces 18 and 19, which form parallel passages 20 and 21.
  • a pair of inwardly sloped wall surfaces 22, 23 are intersected by control element 24.
  • Control element 24 is coupled by tube 26 to valve 27.
  • Valve 27 has a chamber 28 in body member 29 and a valve seat 30 which is connected to tube 31 which leads to a source 32 of high pressure air just upstream of island 16.
  • Valve member 33 has a control knob 34 so that the valve can be adjusted.
  • Fig. 2(a) and Fig. 2(b) illustrate the response to changes in the valve setting extremes. In Fig.
  • the air through outlet 13 is oscillated with a wide fan angle and good mixing of air from source 12 with ambient air. Note the shed or Kantian vortices KV.
  • the jet temperature is modulated toward ambient.
  • valve 27 When valve 27 is open, the device is rendered non-oscillatory by virtue of the higher pressure air from upstream of island 16.
  • the air issuing through outlet 13 has a narrow fan angle with little mixing and the temperature is modulated toward the jet temperature.
  • valve 27 is operated from fully closed to fully open positions and vice versa.
  • Fig. 3 A modification of the remote control is illustrated in Fig. 3.
  • high pressure air is also used to control oscillation.
  • island 16' is provided with a Y- shaped passage 50 having downstream ports 51 and 52 in surfaces 22, 23 connected by a tube 53 to a remotely located control valve 54. Closing the valve thereby preventing the flow of high pressure air permits normal oscillation (Fig. 2(a)) with good mixing and temperature moderated toward ambient valves.
  • Fig. 4(a) and Fig. 4(b) are illustrated a physical linear translation of the island relative to duct 60.
  • the island In Fig. 4(a), the island is in a position or mode to cause oscillation and is moved to a downstream position relative to constriction 51.
  • the steady mode is shown in Fig. 4(b) wherein the island has been translated upstream of constriction 51.
  • the island In Figs. 5(a) and 5(b), the island is rotary relative to the duct.
  • the primed numerals correspond to elements previously described.
  • Figs. 7A, 8 and 9 Other ways of controlling oscillation (and therefore the temperature) as well as integrating the temperature control with control of directionality of the jet is shown in Figs. 7A, 8 and 9.
  • the effect of the nibs can be defeated by venting the air immediately upstream of the nib to ambient.
  • the normal oscillatory condition of the oscillator shown in Fig. 7a is defeated by lifting nibs 14L and 14R to provide a vent path or gap 14VPL and 14VPR.
  • the structure containing nibs 14L and 14R is pivoted so as to form a vent or gap on the left side, the jet will be deflected to the left as shown in Fig. 8, and to the right if one vent is formed on the right. This provides jet directionality control.
  • a nib carrying structure can be nutated about the exit of the oscillator to left and right jet deflection, up and down to create dual vents and allow the jet to exit as shown in Fig. 7b or with the nibs properly positioned to sustain oscillation as shown in Fig. 7a and, therefore, produce modulation of the temperature to the ambient value.
  • the nibs 14L and 14R are carried by frame members 50 and 51 which is coupled to central control members 51.
  • a universal mounting ball 52 and socket joint 53 is carried on a threaded knob member 55, which is threadably engaged with ball 52.
  • the threaded knob member When the threaded knob member is rotated, the nibs are moved toward and away from an oscillatory and non-oscillatory positions, respectively.
  • the left 14L or right 14R nib can be pivoted to prevent one or the other side of the outlet and deflect the jet accordingly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Paper (AREA)
  • Glass Compositions (AREA)
  • Commercial Cooking Devices (AREA)
  • Food-Manufacturing Devices (AREA)
  • Temperature-Responsive Valves (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Nozzles (AREA)
  • Electric Connection Of Electric Components To Printed Circuits (AREA)

Abstract

Control of temperature of air efflux from an air outlet is by control of the oscillation of a fluidic oscillator. Directionality of efflux is by control of nibs at the outlet.

Description

TEMPERATURE CONTROLLER AIR OUTLET
BACKGROUND AND BRIEF DESCRIPTION OF THE INVENTION;
The present invention is directed to an air outlet structure and system, in which air temperature is controlled by mixing or pulsating control of the air flow and also to control the fan angle and directionality of the air flow vectors.
Fluidic oscillators for causing a sweeping or oscillatory movement of an air jet are well known in the art as is exemplified by the following prior patents: 5,099,753, 4,709,622, 4,694,992, 4,672,886 and 3,832,939, and there are many other examples.
In Stouffer patents 4,437,392 and Morris et al. patent 4,941,398, both owned by the assignee hereof, a flexible vane is oscillated by a moving air stream to impose a sweeping or fan- shape to the output air stream.
An object of the present invention is to provide a temperature controller using a fluidic element. A further object of the invention is to provide a low cost temperature controller for issuing air (heated or cooled) into a living space such as a room or into the passenger compartment of a vehicle, such as a passenger car. A further object of the invention is to provide a controllable fluidic element. Still a further object of the invention is to provide a low cost remote control arrangement for controlling the oscillation or non-oscillation of a fluidic element.
In one preferred embodiment of the invention, an island oscillator element of the type disclosed in Stouffer patent 4,151,955 (incorporated herein by reference) is rendered non- oscillatory by translation of the island, or by shifting of a portion of the outlet structure relative to the island. In a further preferred embodiment, the oscillation or non-oscillation of an island oscillator is remotely controlled by a valve feeding pressurized air from upstream of the island to a position or point which precludes the formation of shed or Karman vortices and oscillatory action via an externally operable valve elements, respectively.
DESCRIPTION OF THE DRAWINGS:
The above and other objects, advantages and features of the invention will become more apparent when considered with the following specification and accompanying drawings wherein:
FIG. 1 is a schematic diagram of a preferred embodiment of the invention incorporating fluid remote control of the oscillation or non-oscillation of an island oscillator,
FIGS. 2a and 2b diagrammatically illustrate the operation with the fluid remote control valve closed and open, respectively,
FIG. 3 is a schematic illustration of a further embodiment of the invention incorporating fluid remote control of an island,
FIGS. 4a and 4b illustrate a further preferred embodiment of the invention in which there is relative linear translation of the island relative to the source of heated or cooled air,
FIGS. 5a and 5b illustrate a further embodiment wherein an island element is rotated between an oscillatory and non- oscillatory modes,
FIGS. 6a, 6b and 6c illustrate an island oscillator which is rendered non-oscillatory and oscillatory, respectively, by the absence or presence, respectively, of outlet nibs,
FIGS. 7a and 7b illustrate a further embodiment of the invention wherein the pressure behind the outlet nibs are vented to render the oscillator non-oscillatable,
FIG. 8 illustrates a modification in which the outlet nibs are adjustable for directionality control, and
FIG. 9 illustrates a modification in which oscillatory/non- oscillatory states are combined with directionality control. DETAILED DESCRIPTION OF THE INVENTION:
The invention controls the temperature of the fluid efflux from heater and air-conditioning (A/C) outlets by controlling the oscillation of an oscillator, particularly, an island oscillator of the type disclosed in patent 4,151,955. An island oscillator is particularly advantageous in this invention because it has been found that the outlet temperatures can easily differ as much as 20 degrees between when it is oscillating and when oscillation is negated or the device rendered non-oscillatory. This is because the oscillatory mode produces thorough mixing with the ambient whereas the non-oscillatory mode produces much less mixing with ambient air. This premier or superior mixing is not limited to island oscillators; however, because of the ease of operation, simplicity of the geometry and meeting of minimum (small volumetric space) packaging requirements, the island-type oscillator is preferred.
Referring now to Fig. 1, a temperature controllable air outlet 10 includes a housing or duct 11 coupled to a supply of air (heated or cooled) 12. While duct 11 is preferably rectangular or square in cross-section, round, oval or other shapes can be used. Transition sections from round to rectangular, etc. can be provided in the duct work DW .
The effect of outlet nibs 14L and 14R are shown in Figs. 6(a), Fig. 6(b) and Fig. 6(c). As shown, the small nibs 14L and 14R provide the necessary throat geometry to provide the proper confinement to the downstream section of the island to support oscillation. This is true when the island 16 is positioned close to the outlet. (See patent 4,155,955 for a fuller explanation.)
With only one nib, such as nib 14R, as shown in Fig. 6(c), the jet is turned to the left. In addition, the jet appears to be mixing better on the nib affected side.
Referring again to Fig. 1, an island member 16 has a base 17, parallel side wall surfaces 18 and 19, which form parallel passages 20 and 21. A pair of inwardly sloped wall surfaces 22, 23 are intersected by control element 24. Control element 24 is coupled by tube 26 to valve 27. Valve 27 has a chamber 28 in body member 29 and a valve seat 30 which is connected to tube 31 which leads to a source 32 of high pressure air just upstream of island 16. Valve member 33 has a control knob 34 so that the valve can be adjusted. Fig. 2(a) and Fig. 2(b) illustrate the response to changes in the valve setting extremes. In Fig. 2(a) with the valve fully closed, the air through outlet 13 is oscillated with a wide fan angle and good mixing of air from source 12 with ambient air. Note the shed or Kantian vortices KV. The jet temperature is modulated toward ambient. When valve 27 is open, the device is rendered non-oscillatory by virtue of the higher pressure air from upstream of island 16. The air issuing through outlet 13 has a narrow fan angle with little mixing and the temperature is modulated toward the jet temperature.
This configuration allows remote temperature control which does not require any additional energy. The temperature and focus control are gradual as valve 27 is operated from fully closed to fully open positions and vice versa.
A modification of the remote control is illustrated in Fig. 3. In this case, high pressure air is also used to control oscillation. In this case, island 16' is provided with a Y- shaped passage 50 having downstream ports 51 and 52 in surfaces 22, 23 connected by a tube 53 to a remotely located control valve 54. Closing the valve thereby preventing the flow of high pressure air permits normal oscillation (Fig. 2(a)) with good mixing and temperature moderated toward ambient valves.
Opening the valve 54 permits air flow, which progressively defeats oscillation to moderate the mixing and thus regulate the outlet temperature closer to the inlet. JET'S OR STREAM'S TEMPERATURE:
In Fig. 4(a) and Fig. 4(b) are illustrated a physical linear translation of the island relative to duct 60. In Fig. 4(a), the island is in a position or mode to cause oscillation and is moved to a downstream position relative to constriction 51. The steady mode is shown in Fig. 4(b) wherein the island has been translated upstream of constriction 51. In Figs. 5(a) and 5(b), the island is rotary relative to the duct. The primed numerals correspond to elements previously described.
Other ways of controlling oscillation (and therefore the temperature) as well as integrating the temperature control with control of directionality of the jet is shown in Figs. 7A, 8 and 9. In oscillators where nibs 14 (left and right) are necessary to support oscillation, the effect of the nibs can be defeated by venting the air immediately upstream of the nib to ambient. The normal oscillatory condition of the oscillator shown in Fig. 7a is defeated by lifting nibs 14L and 14R to provide a vent path or gap 14VPL and 14VPR. In addition, if the structure containing nibs 14L and 14R is pivoted so as to form a vent or gap on the left side, the jet will be deflected to the left as shown in Fig. 8, and to the right if one vent is formed on the right. This provides jet directionality control.
A nib carrying structure can be nutated about the exit of the oscillator to left and right jet deflection, up and down to create dual vents and allow the jet to exit as shown in Fig. 7b or with the nibs properly positioned to sustain oscillation as shown in Fig. 7a and, therefore, produce modulation of the temperature to the ambient value.
In Fig. 9, the nibs 14L and 14R are carried by frame members 50 and 51 which is coupled to central control members 51. A universal mounting ball 52 and socket joint 53 is carried on a threaded knob member 55, which is threadably engaged with ball 52. When the threaded knob member is rotated, the nibs are moved toward and away from an oscillatory and non-oscillatory positions, respectively. When in the non-oscillatory position, the left 14L or right 14R nib can be pivoted to prevent one or the other side of the outlet and deflect the jet accordingly.
While I have described and illustrated specific embodiments of the invention, it will be clear that variations of the details of construction which are specifically illustrated and described may be resorted to without departing from the true spirit and scope of the invention as defined in the appended claims.
WHAT IS CLAIMED IS:

Claims

1. A method for controlling the temperature of air efflux from a heated or cooled air outlet to ambient air, comprising: providing a controllable fluidic island oscillator in said air outlet, and controlling the oscillatory and non-oscillatory conditions of said island oscillator to moderate the mixing of said air flow through said outlet with ambient air and thus modulate said air efflux.
2. The method defined in claim 1 wherein said fluidic oscillator includes nibs at the sides of said outlet, and controlling the directionality of air vector issuing through said outlet during non-oscillatory time of said fluidic oscillatory by venting the space upstream of one of said nibs.
3. A method for controlling the temperature of air efflux from a heated or cooled air outlet, comprising: providing a controllable fluidic oscillator in said air outlet, and controlling the oscillatory and non-oscillatory conditions of said oscillator, said oscillator being an island oscillator and said controlling the oscillatory and non-oscillatory conditions of said oscillator including the step of supplying high pressure air to a point on said island to terminate formation of Kar an vortices thereabout.
4. The method defined in claim 1 wherein said oscillator is an island oscillator having an island therein and the step of controlling includes translating the position of said island relative to said outlet. 5. Apparatus for controlling the temperature of air efflux from a heated or cooled air outlet, comprising: a controllable fluidic island oscillator in said air outlet, and means for controlling the oscillatory and non-oscillatory conditions of said island oscillator to moderate the mixing of said air efflux with ambient air and thus modulate said air efflux.
6. The invention defined in claim 5 wherein said fluidic oscillator is an island oscillator having nibs at the sides of said outlet, and means for controlling the directionality of air vector issuing through said outlet during non-oscillatory time of said fluidic oscillatory by venting the space upstream of one of said nibs, respectively.
7. Apparatus for controlling the temperature of air efflux from a heated or cooled air outlet, comprising: a controllable fluidic oscillator in said air outlet, and means for controlling the oscillatory and non-oscillatory conditions of said oscillator, said oscillator being an island oscillator and said means for controlling including means for supplying high pressure air to a point on said island to terminate oscillation.
EP94902367A 1992-12-01 1993-11-30 Temperature controller air outlet Expired - Lifetime EP0623202B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US07/982,646 US5385503A (en) 1992-12-01 1992-12-01 Temperature controller air outlet
US982646 1992-12-01
PCT/US1993/011407 WO1994012831A1 (en) 1992-12-01 1993-11-30 Temperature controller air outlet

Publications (3)

Publication Number Publication Date
EP0623202A1 EP0623202A1 (en) 1994-11-09
EP0623202A4 true EP0623202A4 (en) 1995-04-12
EP0623202B1 EP0623202B1 (en) 2000-02-02

Family

ID=25529378

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94902367A Expired - Lifetime EP0623202B1 (en) 1992-12-01 1993-11-30 Temperature controller air outlet

Country Status (8)

Country Link
US (1) US5385503A (en)
EP (1) EP0623202B1 (en)
JP (1) JPH07504028A (en)
AT (1) ATE189516T1 (en)
AU (1) AU663038B2 (en)
CA (1) CA2128340C (en)
DE (1) DE69327783D1 (en)
WO (1) WO1994012831A1 (en)

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US7503927B1 (en) 2003-06-30 2009-03-17 Vetanze Nelson W Multiple therapy system and method
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US7195555B2 (en) * 2004-02-05 2007-03-27 Collins & Aikman Products Co. Air duct outlets having return air passageways that facilitate oscillating air flow
DE102004023495A1 (en) 2004-05-10 2005-12-08 Behr Gmbh & Co. Kg Air flow, in particular for a motor vehicle
DE102006017376A1 (en) * 2006-04-11 2007-10-18 Behr Gmbh & Co. Kg Air supply channel for connecting air conditioning unit e.g. heater, with air vent of e.g. motor vehicle, has air guiding unit to partially divert main flow flowing through channel, such that rotational flow is developed in channel
SE530624C2 (en) * 2006-12-06 2008-07-22 Scania Cv Abp air Cap
NL1036489C2 (en) * 2009-01-30 2010-08-02 Biddle B V AIR CURTAIN DEVICE AND METHOD WITH A PULSING AIRFLOW.
NL1036490C2 (en) * 2009-01-30 2010-08-02 Biddle B V AIR CURTAIN DEVICE AND METHOD FOR REALIZING A CURTAIN CURTAIN WITH SPEED IN THE CROSS-DIRECTION.
US10959674B2 (en) 2017-10-23 2021-03-30 Datafeel Inc. Communication devices, methods, and systems
CA3177615A1 (en) 2020-10-30 2022-05-05 Datafeel Inc. Wearable data communication apparatus, kits, methods, and systems

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Also Published As

Publication number Publication date
WO1994012831A1 (en) 1994-06-09
ATE189516T1 (en) 2000-02-15
DE69327783D1 (en) 2000-03-09
CA2128340C (en) 1999-08-24
CA2128340A1 (en) 1994-06-09
AU663038B2 (en) 1995-09-21
JPH07504028A (en) 1995-04-27
AU5676094A (en) 1994-06-22
EP0623202A1 (en) 1994-11-09
US5385503A (en) 1995-01-31
EP0623202B1 (en) 2000-02-02

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